31868296 has 32 divisors (see below), whose sum is σ = 61098840. Its totient is φ = 15579648.

The previous prime is 31868273. The next prime is 31868297. The reversal of 31868296 is 69286813.

It can be written as a sum of positive squares in 4 ways, for example, as 30404196 + 1464100 = 5514^2 + 1210^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31868297) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 114910 + ... + 115186.

Almost surely, 2^31868296 is an apocalyptic number.

It is an amenable number.

31868296 is a deficient number, since it is larger than the sum of its proper divisors (29230544).

31868296 is a wasteful number, since it uses less digits than its factorization.

31868296 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 553 (or 549 counting only the distinct ones).

The product of its digits is 124416, while the sum is 43.

The square root of 31868296 is about 5645.2011478777. The cubic root of 31868296 is about 317.0440550845.

The spelling of 31868296 in words is "thirty-one million, eight hundred sixty-eight thousand, two hundred ninety-six".